This study investigates the impact of adding zinc and/or linoleic acid in a complete and balanced diet on the skin and haircoat condition of adult dogs. During eighteen weeks, animals consumed a standard diet for nine weeks and a supplemented diet for the remainder. Quantitative assessments of skin and haircoat condition were made after nine and eighteen weeks. Results showed dogs on the supplemented diet had a significantly improved coat gloss and scale compared with the standard diet. Additionally, there was a significant decrease in transepidermal water loss for dogs supplemented with zinc only or in combination with linoleic acid.
Effects of zinc and linoleic acid supplementation on the skin and coat quality of dogs receiving a complete and balanced diet
Marsh, K.A. et al.